Fuel-consumption indicator and cylinder primer



Feb. 19 ,'1924. 1,484,144

G; W. MARSH FUEL CONSUMPTION INDICATOR AND CYLINDERPRIMER Filed June 1, 1920 Elmo/whom gafimay Patented Fe. 19, 1924.

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runt-coitsuiurrroninnrca roannn orilrnnnitraimnnf Application filed June To all whom it may concern: Be it known that I, Gnonen W. MARsH, a Zcitizen of the United States, residing at Oakland, in the county of Alameda and o State of California, have invented certain 2' new and useful Improvements in'Fuel-Conj sumpt'ion Indicators and Cylinder Primers, "of which the following is a specification. 1V My invention is an improved'fuel consumption indicator, particularly applicable to vacuum fuel feeding systems for gas engines. .My invention also provides an easy i means for priming the engine cylinders.

forms apart of this specification: Figure -1 1sla.'s1de view of my IIIVBIltlOH appliedto a vacuum feed of an automobilegas engine.

Figure 2 is a vertical section of my inven- 20 tion and a vacuum fuel feed to which my invention is applied. 7

Figure 3 is a side view of the auxiliary air supply valve.

Figure 4 is a vertical section of said supply valve. 2

Figure 5 is a bottom plan view of said supply valve.

In the drawing, 1 indicates a vacuum fuel supply tank adapted to be mounted on an automobile above the carburetor. Said tank is closed at the top by a head 2. A filling chamber 3-is closed at its upper end by head 2 and suspended from said head within the tank 1 above an emptying tank 4: formed in the lower part of said tank. A pipe 5 leads from the gasoline supply tank (not shown) through the head 2 into the upper part of filling chamber 3. From the bottom of the filling chamber 3 leads an outlet 6 controlled by a flapper valve 7. In the filling chamber 3 is a float 8. Afloat lever 9 is pivoted to a bracket '10 depending from the head 2, which lever is connected at its swinging end to a pin 11 on the top of the float 8. Levers 12 and 13 are pivoted to a bracket 14 depending from the head 2. A link15 connects the float lever 9 and the lever 12.

The head 2 has a port 17 leading into the filling chamber 3 to which port is connected a pipe 18 leading to the engine intake manifold, said port being controlled by a valve 19 connected to the lever 13. The head 2 has a port 20 to which is connected a pipe 21 by means of union 22 screwed into the head 2, which pipe extends to the upper part Referringto the annexed drawing which 1920. Serial-Io." 335398. 1

= of the automobiledash and has a whistle23 on its outer end. From theport'20 lead ports 24 land-25 respectively into the top of cham-v her- 3' and-tank 1'. The p0rt'24 is controlled a valve 26 connected to the lever- 13.

inner end of-pipe 21 is controlled by a, valve'27 infunion 22. ,The tank lhas an outlet -28 leading from the bottom of the emptying chamber 4 to the engine carburetort;- The structure above described is the well known fStewart- Vacuum Gasoline System in use on automobiles/. The union 22 has a. 'port 29 in- 'its 'inner' endg th'rough which the-stem of valve 27 extends, and with ports 30. below the valvef27,gone of whichpo'rts communicates with aport 31 leading-finto-port 17;

When the filling tank 3 is is down and the valve 19 is openwhile the valve 26 is closed. The suction of the intake stroke of the engine piston draws the air out of the chamber 3 through port 17 and pipe 18, creating a vacuum in said chamber into which gasoline is forced through pipe 5. When the gasoline fills thetank 3 the lever 12 is swung upwardly through" lever 9 and link 15, and the sprin 16 passing above the pivot of levers 12 an 13 swings the lever 13 upwardly, closin valve 19 and opening valves 26 and 27 an port 24, which admits air through whistle 23, pipe 21, union 22 and port 24'into the chamber 3 and causes air to pass from union 22 through ports 30 and 31, port 17 and pipe 18 and blow the whistle 23 and. indicate the filling of the tank 3. As the spring 16 empty the float I snaps the arm 13 upwardly to open the valve 26 and close the valve 19, the inertia carries the valve 26 above its normal resting point and contacts with the stem of the valve 27 to momentarily unseat said valve which blows the whistle. The valve 27 seats bitsown weight and stops the whistle. prevents the further entry of gasoline into the chamber 3. When the gasoline is drawn ir entering the chamber 3then of the car looks at the cyclolneter and in this way is able to determine the mileage he is getting from the gasoline.

I take,'adapted to blow when the tank is sub- When the engine 1s stoppedand the chamher 3 filled and valves 19' and 27' closed sHaving described my 1nvention,I:c1aim:

1. In a vacuum fuel feed systemcomprisinga tank, an air intake, a suction intake,

and a fuel intake, a whistle in said air instantially; full, a passage between the air intake and the suctionintake, a valve controlling said passage, a valve controlling said suction intake,a filling chamber in said tank, said chamberhaving an air intake port therein, a valve controlling sa d port,

a float in said chamber, and means joining saidfioat and said airintake valve andsaid suction intake valve whereby said valves are alternately opened and closed by the float, v

23 and the said air intake valve being adapted to en gage and raise the first mentioned valve,

thus actuating said whistle substantially as intake and the suction intake, a valve con trolling sa d passage, a valve controlling said suction intake, a filling chamber in said tank, said chamber having an air intake port therein,:a valve controlling said port, a fi'oat in said chamber, asystem of sprin controlled levers joining said float and said air intake valve and said suction in-:

take valve whereby said valves are alternately opened and closed by the float,.and operative meansj'oining said air intake valve'and said first mentionedvalve whereby said first mentioned valve is opened upon the raising of said air" intake valve, thus momentarily actuating the whistle. V V In testimony whereof I afik my si nature;

V GEORGE W. MBA SH.

fuel feed system compris- 

